| Rubus decussatus | GB, VC13 West Sussex, Blackdown | William Charles Richard Watson | William Charles Richard Watson | 4/8/1945 | SLBI |
| Rubus cissburiensis | GB, VC13 West Sussex, Devil's Dyke | William Charles Richard Watson | Job Edward Lousley William Charles Richard Watson | 7/1926 | SLBI |
| Rubus hastiformis | GB, VC13 West Sussex, Devil's Dyke | William Charles Richard Watson | William Charles Richard Watson | 14/7/1930 | SLBI |
| Rubus naldrettii | GB, VC13 West Sussex, Fittleworth | William Charles Richard Watson | William Charles Richard Watson | 20/7/1936 | SLBI |
| Rubus naldrettii | GB, VC13 West Sussex, Fittleworth | William Charles Richard Watson | William Charles Richard Watson | 20/7/1936 | SLBI |
| Rubus leucandriformis | GB, VC13 West Sussex, Iping Common | William Charles Richard Watson | William Charles Richard Watson | 24/7/1936 | SLBI |
| Rubus glanduliger | GB, VC13 West Sussex, Lavington | William Charles Richard Watson | William Charles Richard Watson | 25/7/1936 | SLBI |
| Rubus crudelis | GB, VC13 West Sussex, Midhurst | William Charles Richard Watson | William Charles Richard Watson | 3/8/1932 | SLBI |
| Rubus winteri | GB, VC13 West Sussex, Midhurst | William Charles Richard Watson | William Charles Richard Watson | 22/7/1936 | SLBI |
| Rubus wedgwoodiae | GB, VC13 West Sussex, Midhurst | William Charles Richard Watson | | 24/7/1936 | SLBI |
| Rubus wedgwoodiae | GB, VC13 West Sussex, Midhurst | William Charles Richard Watson | William Charles Richard Watson | 24/7/1936 | SLBI |
| Rubus rufescens | GB, VC13 West Sussex, Petworth | William Charles Richard Watson | William Charles Richard Watson | 19/7/1936 | SLBI |
| Rubus albionis | GB, VC13 West Sussex, Petworth, Bognor Common | William Charles Richard Watson | William Charles Richard Watson | 19/7/1936 | SLBI |
| Rubus chloophyllus | GB, VC14 East Sussex, Benhall Mill Lane | William Charles Richard Watson | William Charles Richard Watson | 24/7/1947 | SLBI |
| Rubus chloophyllus | GB, VC14 East Sussex, Benhall Mill Lane | William Charles Richard Watson | William Charles Richard Watson | 24/7/1947 | SLBI |
| Rubus atrocaulis | GB, VC14 East Sussex, Newbridge | William Charles Richard Watson | William Charles Richard Watson | 17/7/1952 | SLBI |
| Rubus newbridgensis | GB, VC14 East Sussex, Newbridge | William Charles Richard Watson | William Charles Richard Watson | 17/7/1952 | SLBI |
| Viola riviniana | GB, VC14 East Sussex, Nobody's Wood | William Charles Richard Watson | William Charles Richard Watson | 12/4/1946 | SLBI |
| Rubus sectiramus | GB, VC14 East Sussex, Piltdown | William Charles Richard Watson | William Charles Richard Watson | 12/7/1936 | SLBI |
| Rubus subinermoides | GB, VC14 East Sussex, Saint Leonards | William Moyle Rogers | Charles Edward Britton William Charles Richard Watson | 19/8/1897 | SLBI |
| Rubus subinermoides | GB, VC14 East Sussex, Tunbridge Wells | William Charles Richard Watson | William Charles Richard Watson | 7/1940 | SLBI |
| Rubus subinermoides | GB, VC14 East Sussex, Tunbridge Wells | William Charles Richard Watson | | 14/8/1950 | SLBI |
| Rubus chloophyllus | GB, VC14 East Sussex, Uckfield,Budletts Common Cultivated | William Charles Richard Watson | | 1948 | SLBI |
| Rubus | GB, VC14 East Sussex, Wych Cross | William Charles Richard Watson | William Charles Richard Watson | 16/7/1936 | SLBI |
| Rubus sciocharis | GB, VC15 East Kent, Bigbury Cultivated | William Charles Richard Watson | William Charles Richard Watson | 8/7/1937 | SLBI |
| Rubus canterburiensis | GB, VC15 East Kent, Canterbury | William Charles Richard Watson | | | SLBI |
| Rubus sciocharis | GB, VC15 East Kent, Canterbury Cultivated | William Charles Richard Watson | | 8/7/1927 | SLBI |
| Rubus sciocharis | GB, VC15 East Kent, Canterbury | William Charles Richard Watson | Botanical Exchange Club of The British Isles | 1934 | SLBI |
| Rubus conjungens | GB, VC15 East Kent, Covet Wood | F R John Ezra Woodhead William Charles Richard Watson | William Charles Richard Watson | 7/7/1950 | SLBI |
| Rubus acutifrons | GB, VC15 East Kent, Harbledown | | William Charles Richard Watson | | SLBI |
| Rubus acutifrons | GB, VC15 East Kent, Harbledown | | William Charles Richard Watson | 10/7/1934 | SLBI |
| Rubus glareosus | GB, VC15 East Kent, Pollhill | William Charles Richard Watson | | 9/1948 | SLBI |
| Rubus glareosus | GB, VC15 East Kent, Pollhill | William Charles Richard Watson | | 9/1948 | SLBI |
| Rubus cantianus | GB, VC15 East Kent, Sutton Valence | William Charles Richard Watson | | 30/7/1938 | SLBI |
| Rubus diversus | GB, VC16 West Kent, Abbey Wood | William Charles Richard Watson | | 5/9/1931 | SLBI |
| Rubus salteri | GB, VC10 Isle of Wight, Apsecastle Wood GB, VC16 West Kent, Bickley Cultivated | William Charles Richard Watson | William Charles Richard Watson | 26/6/1938 | SLBI |
| Rubus affinis | GB, VC16 West Kent, Bickley Cultivated | | William Charles Richard Watson | 3/8/1950 | SLBI |
| Rubus pallidus | GB, VC16 West Kent, Bostall Heath | William Charles Richard Watson | | 16/7/1931 | SLBI |
| Rubus euryanthemus | GB, VC16 West Kent, Bostall Heath | William Charles Richard Watson | | 16/7/1931 | SLBI |
| Rubus cantianus | GB, VC16 West Kent, Bostall Heath | William Charles Richard Watson | | 29/7/1934 | SLBI |